I'm not sure if this has been suggested before, but I think having EU powered light bulbs would be extremely useful for Industrial Craft. Image having a city full of buildings and all of the lights in the city are being powered by electricity made in a nearby power plant. Someone could also then sabotage the power plant. My original plan was to use Luminators; but I found out that they are completely broken in IC2 and you need to request power in order for them to turn on. So in theory, you would have to have a furnace or some other machines constantly running in order for your house to get light. The light bulbs would always be on if they have cables attached to them. In order to turn them off, you could use a piston to yank out the wire and turn off all the lights. An alternative method would be to use redstone + electricity to turn the light bulbs on and off.
I think this is one massive feature of IC that is heavily needed. Anyone else think so?